I played two events in 2010, cashed in one and honestly felt the whole experience to be rather blah.
I'd played in cash games for 10-12 hours at a time, but 12 hours of tournament poker is fucking boring, like gouge out your eyeballs boring.
I didn't like the table dynamics and the Rio is a shit hole.
It may seem like a glamorous 'dream' but save the 1500 especially if the money is meaningful.